Q: What are the prime factors of the number 15,971,676?

 A: 2, 3, 7, 107, 1777

Why are those the prime factors of the number 15,971,676?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 15,971,676

15,971,676
Factor Arrows
27,985,838
Factor Arrows
23,992,919
Factor Arrows
31,330,973
Factor Arrows
7190,139
Factor Arrows
1071,777

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 107, 1777

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 107 x 1,777 = 15,971,676

This can also be written as 22 x 31 x 71 x 1071 x 1,7771 = 15,971,676

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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